CWB 2 VISUAL WELD 2025
INSPECTOR EXAM
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
What are the three things necessary to cause room temperature hydrogen cracking
in steel welds - ANSWERS-Hydrogen, stress, susceptible microstructure
QUESTION 2
Cooling rate is dependent on - ANSWERS-Cooling rate is always dependent on
the plate thickness
QUESTION 3
Basic electrodes coatings release carbon dioxide in the arc atmosphere and -
ANSWERS-lower the amount of hydrogen gas in the arc
QUESTION 4
Welding codes normally require a waiting period between welding and inspection
because - ANSWERS-hydrogen induced cracks (HICC) may occur several hours
after the weld has solidified
END OF
PAGE 1
, CWB 2 VISUAL WELD 2025
INSPECTOR EXAM
QUESTION 5
What is the main reason for pre-heating - ANSWERS-to reduce the hydrogen
content of the weld by diffusion
QUESTION 6
The tekkan test is suitable to study crack susceptibility in a - ANSWERS-Groove
weld
QUESTION 7
Lamellar tearing is most likely to occur in which of the following - ANSWERS-
thick T-groove welds
QUESTION 8
During welding, the proportion of heat energy that enters the plate is referred to as
its efficiency. What is the efficiency dependent on - ANSWERS-The welding
process
END OF
PAGE 2
, CWB 2 VISUAL WELD 2025
INSPECTOR EXAM
QUESTION 9
When the alloy content of a structural steel us sufficiently high that HAZ hardness
cannot be controlled - ANSWERS-The only remaining factor which can be
controlled is hydrogen content
QUESTION 10
In arc welding, the area of the base metal adjacent to the fusion line which is not
melted is called - ANSWERS-The Heat Affected Zone
QUESTION 11
Process that are not hydrogen controlled may require - ANSWERS-Higher preheat
temperatures for thicker plates
QUESTION 12
What joints provide the most dilution - ANSWERS-The square groove weld with
zero root opening
END OF
PAGE 3
, CWB 2 VISUAL WELD 2025
INSPECTOR EXAM
QUESTION 13
what electrode type is often required if stress relieving operation are planned on the
fabricated structure to maintain the same yield strength and tensile strength -
ANSWERS-Molybdenum-bearing electrodes
QUESTION 14
The type of microstructure and susceptibility to cracking of a heat affected zone
depends on - ANSWERS-Hardenability of the steel and the weld cooling rate
QUESTION 15
The level of preheat required is typically derived from the - ANSWERS-plate
thickness and the carbon content of the steel
QUESTION 16
Submerged arc welding has a process efficiency of - ANSWERS-90% to 99%
END OF
PAGE 4
INSPECTOR EXAM
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
What are the three things necessary to cause room temperature hydrogen cracking
in steel welds - ANSWERS-Hydrogen, stress, susceptible microstructure
QUESTION 2
Cooling rate is dependent on - ANSWERS-Cooling rate is always dependent on
the plate thickness
QUESTION 3
Basic electrodes coatings release carbon dioxide in the arc atmosphere and -
ANSWERS-lower the amount of hydrogen gas in the arc
QUESTION 4
Welding codes normally require a waiting period between welding and inspection
because - ANSWERS-hydrogen induced cracks (HICC) may occur several hours
after the weld has solidified
END OF
PAGE 1
, CWB 2 VISUAL WELD 2025
INSPECTOR EXAM
QUESTION 5
What is the main reason for pre-heating - ANSWERS-to reduce the hydrogen
content of the weld by diffusion
QUESTION 6
The tekkan test is suitable to study crack susceptibility in a - ANSWERS-Groove
weld
QUESTION 7
Lamellar tearing is most likely to occur in which of the following - ANSWERS-
thick T-groove welds
QUESTION 8
During welding, the proportion of heat energy that enters the plate is referred to as
its efficiency. What is the efficiency dependent on - ANSWERS-The welding
process
END OF
PAGE 2
, CWB 2 VISUAL WELD 2025
INSPECTOR EXAM
QUESTION 9
When the alloy content of a structural steel us sufficiently high that HAZ hardness
cannot be controlled - ANSWERS-The only remaining factor which can be
controlled is hydrogen content
QUESTION 10
In arc welding, the area of the base metal adjacent to the fusion line which is not
melted is called - ANSWERS-The Heat Affected Zone
QUESTION 11
Process that are not hydrogen controlled may require - ANSWERS-Higher preheat
temperatures for thicker plates
QUESTION 12
What joints provide the most dilution - ANSWERS-The square groove weld with
zero root opening
END OF
PAGE 3
, CWB 2 VISUAL WELD 2025
INSPECTOR EXAM
QUESTION 13
what electrode type is often required if stress relieving operation are planned on the
fabricated structure to maintain the same yield strength and tensile strength -
ANSWERS-Molybdenum-bearing electrodes
QUESTION 14
The type of microstructure and susceptibility to cracking of a heat affected zone
depends on - ANSWERS-Hardenability of the steel and the weld cooling rate
QUESTION 15
The level of preheat required is typically derived from the - ANSWERS-plate
thickness and the carbon content of the steel
QUESTION 16
Submerged arc welding has a process efficiency of - ANSWERS-90% to 99%
END OF
PAGE 4
